Twitter told Motherboard that users are not allowed to openly hope for Trump’s death on the platform and that tweets that do so “will have to be removed” and that they may have their accounts put into a “read only” mode. Twitter referred to an “abusive behavior” rule that’s been on the books since April.

“Content that wishes, hopes or expresses a desire for death, serious bodily harm or fatal disease against an individual is against our rules,” Twitter said in a statement. This rule will apparently apply to people who wish death on Trump, who is the single most powerful person in the world.

As Motherboard has previously reported, Facebook has different rules for speech that is focused on celebrities and public figures. Facebook says it “distinguish[es] between public figures and private individuals because we want to allow discussion, which often includes critical commentary of people who are featured in the news or who have a large public audience. For public figures, we remove attacks that are severe as well as certain attacks where the public figure is directly tagged in the post or comment.” What this means is that it’s OK to post on Facebook that you hope Trump dies, so long as you do not tag him in the post or “purposefully expose” him to “calls for death, serious disease, epidemic disease, or disability.”